Printing machine



June ,1926. 1,587,854

L. c. RAwsoN PRINTING MACHINE 'Filed March 1.0. 1922 6 sheets-sheet 1 June' s 192e. 1,587,854

L. C. RAWSON PRINTING MACHINE Filed March 10, 1922 5 Sheetssheet 2 June 8,1926. 1,587,354

l l.. c. RAvg/ soN y PRINTING MACHINE Filed March 10. 1922 6 Sheets-Sheet 5 Y June 8 1926. v 1,587,854

L. C. RAwsoN PRINTING MACHINE Filed March 10. 1922 6 SheetsPsheet 4 FgAcya N I f 2 62 ft 63 f6 I z 70x f Q a 305" a Q I v l a 5 A 3 b g/ Hizo/we 5.

June 8 1926.

1,587,854' l.. c. RAwsoN PRINTING ummm:-

Filed' Mach 1Q. 1922 5 sheetssheet 5 June 8 1926.

A L. C. RWSON PRINTING incarna 6 Sheets-Sheet 6 Filed March 10. 1922 /m7e/7fof: 07e GI {anza/r,

/7/6 fryer/122995.

Patented June 8, 1926.

UNITED stares narrar LILE o. RAWsonor HIoAeo, IIiiinvoIs, assrenon To n. s'. Kiran; on CiiIoeo,

ILLINOIS.

yI?nIn'fIIne MACHINE.

Appiicatimilea March Y1o, 192'2. serial No. 542,529.

This invention relatesv to printing machines, and has specialV reference to that type of printing machine designed to print upon large flat or plane surfaces such as 5 mat board or other fabricated materials.

An object of the' invention is to provide an improved printing n'iachinef of the type mentioned including a novel mechanism for operating and controlling` the form impression cylinder and the paint applicator so the paint will'he applied to the form impression cylinder during travel thereof in one direction but will not loe applied thereto during travel thereof' in the other direction, so that the moif'ement of the form impression cylinder in one direction is utilized to prime themat hoard, etc., which is being printed.

Another object of the invention is' to provide a printing` ma'chine'of the character mentioned, comprising a reciprocating carriage for the form impression cylinder and novel mechanism for reversing direction of travel of the carriage to cause the form impression cylinder to act as a primer during movement thereof in one direction and to complete the operation of printingl during a movement or movements thereof in the opposite direction. y

Another object of the invention .is to lprovide a printing machine of the character mentioned, which the operating motor is mounted upon and carried hy the carriage of the form impression cylinder.

Another object of the invention is to provide a highlypimproved transmission mechanism and means for controlling` it to operate the carriage in either direction. p

@ther 'objects will appear from the following description, reference loeing made to the f.i drawings in which d 1 is Va top plan view of my improved machine..

Fig. '.Zis a side elevation of the machine looking toward the side on which the motor is mounted.

Fig. 3 is a side elevation showing the other side of the machine.

Fig. 4t is a vertical sectional view on the line H of Fig. 2. i to Fig. 5 is an end elevation of the machine,

viewed from the left of Fig. 2.

Fig. 6 is a horizontal transverse sectional Fig. 9 is a view showing one Iof theclutch devices included in the transmission mechanism.

The table 1 for holding-the Work during operation of the machine is supported by a frame 2 having ledges 3 on opposite sides-` thereof. A rail t is" mounted on one of the ledges 3 andl a rail 5, having a pointed or wedge-shaped upper surface, is mounted on the other ledge 3. The rails 4 an'd 5 are of hard metal, such as rolled steel, and are secured in rigid parallel relationship.

A carriage comprising side members 6 and connecting members 7 extending across the machine above the table 1 is provided with rollers S 4t and with grooved rollers 9 arranged to operate upon the rail 5. Ghvio'usly, the grooved rollers 9 operating on the rail 5 will guide the carriage properly in operation.

A bracket 10 is attached to one side of the carriage 6 and a supporting frame 11 is attached to the other side of the carriage.

A shaft 12 is journale'd in hearings supported hy the bracket 10 and hy the frame 11.

The shaft 12 extends transversely of the machine, parallel with the upper surface of the work table 1. A form impression cylinder 13 is supported by the sliatt 1Q. The impression forms may be secured to the cylinder 13 in any desired manner. forms are applied and the work is placed upon the table l, the carriage is operated in alternately opposite directions, provision being made so that the work is primed during` travel of the cylinder in o e direction and the printing is completed during travel of the cylinder in the opposite direction.

A motor 14- is supported by the. carriage within the frame 11 and operates a shaft 15 extending into and journaled in a housing 16 for the transmission mechanism. A worm 17 on the shaftv 15 within the housing meshes with a worin gear 18 loosely mounted upon'the shaft 19. The shaft 19 has a pinion 2O (Fig. 2) thereon meshing` with one*l arranged to operate upon the` rail After the of two large gears 21 that are rigid with the shaft 12 of the form impression cylinder. The large gears 21 mesh with parallel racks 22 that are rigid with the frame of the machine. It is obvious that if the shaft 19 be rotated in one direction the carriage of the form impression cylinder will be operated toward one end of the machine, and if said shaft 19 be rotated in the opposite direction the carriagel will be operated toward the other end of the machine. comprises mechanism for effecting this reverse rotation of the shaft 19 to reverse the travel of the carriage while the motor shaft rotates continuously in one direction.

As stated and as shown, the worm gear wheel 18 is loosely supported upon the shaft 19. The worm gear 18 is rigid with agear wheel 23 that meshes permanently with a gear wheel 24 (Fig. 7) attached to a shaft 25. By this gearing the shaft 25 is rotated whenever the motor operates. The transmission mechanism includes means for clutching the worm gear 18 upon the shaft 19 to rotate said shaft 19 in one direction; and also includes means whereby the shaft 19 may be rotated in the opposite direction from the shaft 25. I will first describe the clutch device for clutching the worm gear 18 to the shaft 19.

As shown 6), a drum or sleeve 26 is attached to worm wheel 18 and the gear wheel 23 by bolts 26a. Inside the drum or sleeve 26 but disconnected therefrom a hub 27 is keyed to the shaft 19 andV has radial arms 28. An arcuate arm 29 is in connection with the outer end of each of the arms 28. A shoe 30 is located between each of the curved arms 29 and the lining 31 of the drum 26. The shoes 30 are movable to and from position to form a clutch connection between the curved arms 29 and the drum 26 in order to rotate the shaft 19. Springs 32 draw the shoes 30 from clutching position,

leaving the drum 26 free t-o rotate without rotating the shaft 19. Mechanism is provided for actuating the shoes 30 to position to form a clutching connection between the drum 26 and the arms 29 so as to rotate the shaft 19. As shown a pair of arms 33 (Figs. 6 and 9) are pivotally supported by the hub 27 and have their outer ends eX- tending under levers 34. The levers 34 are pivotally supported against pins 35 mounted in matching recesses in theends of the shoes 30 and in said levers 34. The pins V35 are not rigid with any part, but are wholly supported by the shoes 30 and the levers 34. The outer ends of t-he levers 34 extend against the ends of the shoes 30 so that by moving the inner ends of the levers 34 radially outward the shoes 30 will be forced against the tension of the springs 32 to engage projections 36 on said shoes with the ends of the curved arms 29, while the ad- My invention jacent end of the other shoe is forced outwardly by the pressure of the lever 34 against the pin or pivot 35. Referring'to Fig. 9, it will be understood that this operation is obtained as follows: The outward movement of the inner end of each lever 34 causes its pin 35 to force outwardly the shoe 30, which said pin engages, against the lining 31. At the same time, each lever 34 forces the other shoe 30 around until its projection 36 engages the end of the arm 34. Due to their relationship, firm engagementof the shoes 30 with the lining 31 and the projections 36 with the arms 29 is obtained when all of said parts are moved as aforesaid. In this way the clutch is closed and the shaft 19 will be rotated by the drum 26.

A frame 37 is supported within the housing 16 by a pair of collars 38 and 39. The collar 38 has a beveled portion 40 movable under theouter ends of the arms 33 a suflicient distance to engage the ends of said arms in a groove 41 around said collar. The parts are shown so positioned in Fig. 6. Then in the position there shown, the clutch above described is closed and the shaft 19 is rotated thereby. By shifting the clutch closer 38 in the opposite direction, that is away from and out of engagement with the arms 33, the clutch will be opened and the drum 26 may turn freely without operating the shaft 19. Screws 42 in the levers 34 are settable to bear against the arms 33 so as to vary the adjustment of the parts.

From the foregoing it will be seen that by setting the clutch just described in the iosition shown in Fig. 6, the shaft 19 will be rotated from the gear supported thereby. By opening the clutch above described the worm gear 18 will be left free to turn on the shaft 19. Provision is made for driving the shaft 19 from the shaft 25. As shown (Fig. 7), a sprocket wheel 43 on the shaft 25 is connected with a sprocket wheel 44 loose on the shaft 19 by a sprocket chain 45. Obviously, if the sprocket wheel 44 be clutched to the shaft 19 when the clutch above described is open, the shaft 19 will be rotated from the shaft`25. y

The sprocket wheel 44 is in connection with a drum 46 loose on the shaft 19 and equipped with a clutch mechanism just like the clutch mechanism above described, the parts being of like construction and having the same reference numerals applied thereto. The arms 33 of the clutch for the sprocket wheel 44 are movable radially outward by an inclined extension 47 in connection with the collar 39, and having al groove 48 corresponding to the groove 41. The frame 37 which connects the collars 38 and 39 is operable to open one clutch automatically and as an incident to the closing of the other clutch.

The 1 invention includes means for shifting the frame 37 automatically and as incident tothe approach of the carriage towardeaclr end of its movement and said means Wil-lnoiv be described;

@ne eiidwof the housing 16' pivotally supports abelly crank lever e9, one arm of which is above avertically movable' plunger 50. Acainl-on'theframe of'tlien'iac'hine in the path of m'ov'ment of the plunger 50 so that as the'carr approaches the end of the frame the pli er will be raised, thereby operating the" lever 49. The lever 4:9is' connected by a link 51n (Fig. il) with an arm 52v attached to a rodv 53'` supported for rocking movements in the housing` 16. Ariiis 54 attached tothe rod 53 inside the housing are pivoted to the frame 37 and operate to shift' the frame to pemion to jclose the clutch in`v` diiect connection With the Worm gear 18 and to onen the other clutch in'oonnection with thesprocket Wheel 441 Assuming thatthe carriage -is moving toward' the' right, as seen inl Fig'. 2, the

i raising of t-he'plunger 50 by the calin- 51 will shift the clutchl mechanism to' reverse direc ti'on of rotation ofthe shaft" 19: and thereby reverse the direction ofI travel of tbe cai:- riage'. As the carriage approaches thil other end of the frame, a plunger 55, similar to the pliinge'rv 50,5 rides upon a camblock 56 (Fig-2) raising an arm 57 attached to the otherend of the rodl 53, thereby causing ilie arms 54' (Fig. 8) on" said rod'i 53 te shift the frame 37 to position to open the clutch controlling the Worm'gear 18 and to close the clutch infcoiin'ectioii vvith the sprocket Wheel Llll and again' reverse the direction of travel ofV the" carriagel The bracket 105 has an arm 58 (Fig. and thev frame 11 has similar arm 9 (tFig. 2).` A' shaftV GO i'srotati'vely supported iii`v bearings onl the arms 58 and'` 59 and has a gear 61l 1)V meshing vith' one of the form' impression cylinder" gears 2l. The g'ear'l is arranged onthe shaft 50 so thatf rotation ofsaid gear in one direction i'villrotate tli'e'shaft 60. but rotation of said gear inl the opposite direction'- Will not rog tate the shaftV 60. A sprocket Wheel' 62 is attached to theshaft (Fig. 3) andl is engagedby a chain 63 Which also passes around a sprocketivheel'eh The sprocket wheel {34- is attached toa shaft G5 which is joninaled for rotation'in the end Walls ofy a paint basin 66, The paint basin (56 is supported by arms 67 swinging 4fromtthe shaft 60. A- paint applying roller vGS (Figs. 1" and 5) is mounted on theshaft and operates Within the basin 6G effectively totake paint from the basin andV apply it to theforms on the impression cylinder." Another' roller 69 is supported aboveV the roller 68 so as to operate against the latter and prevent excessive amounts of paintifrloiiib'eingplaced on the forms; Lookifngat- Fig. 3 and assuming that the carriage isn'iovingtoward the right, it will be seen that the shaft 65 and the roller 68 thereaien are rotated in a counter-clockwise direction.

The roller e8 takes paint fromthe basin 66 the carriage, that is during movement rof i the carriage toward the left,A as seen in Fig. 3, the paint applicator is rendered ineffective so that itdoes not apply paint to the form impression cylinder, leaving the leitvvard movement of the carriage, as seen in 3,-

to function for priming the mat board. rihat is, the relatively small amount or paint re maining on the forms after the completion of the movement of the carriag right is utilized to prime a new mat board placed on the supporting table 1. Move nient of the carriage in one direction is thus utilized to apply a priming coat of paint to the inatboard, and the movement of the carriage in the opposite direction is utilized to apply a finishingA coat of paint to the niet board that had been primed. Thus, a round tri'p or complete cycle of movement f the carriage completesthe Work on the form on a sheet ofmat board.

A friction device 70 on the shaft 12 (Figs. 1' and 3) has a link 71 pivoted thereto, the opposite end of said link being pivoted to an` ariii 72 on a shaft 73 supported by the carriage 6. rlhe device 70 is a half ring mounted on the shaft 12 and frictionally engaging said shaft. Said half ring may be heldin frictional engagement with the shaft 12 by being bolted to a cooperating ring member, as shown. As a result of the frictioiial contact of the part 70 With the rotary shaftz12 there is a tendency to turn the part 70 With the shaft. A collar 74 has onee'nd connected to the arm 72 by a pivot 711 and the opposite end lreceiving the threaded end of a rod 75 rotatively mountediii albearing'76svviveledlonthe basin 66. The rod 7 5 isheld from endvvise' movement through a bearing 7 6' by collars 75a rigid with the rod on opposite sides of said bearingv 76. Thev fact that the bearing 76 is swiveled'permits the sleeve 7 4e to raise and lower the'connected end of the rod 75 in moving the paint applying device toward and away from the impression cylinder. By this arrangement rotation of the shaft l2 during movement of the carriage toward the right', as seenk in Fig. 3, causes the roller 68 to operate against the forms on the cylinder'; and reverse movement of the carriage O'e toward the y reversing the rotation of the shaft 12 causes the connection to move the paint applicator roller 68 out of contact With the forms on the impression cylinder, leaving the impres sion cylinder free to operate as a priming device.

rlhe table l is adjustably supported on the upper ends of screws 77 (Fig. 4) so that said table may be adjusted for diiferent thicknesses of material.

From the foregoing it will be seen that my invention is a perfected machine, capable of use for printing artistic designs. The machine is a self-contained mechanism in that the motor is mounted directly upon the machine and is carried With the carriage that is operated thereby. The capability of the machine to perform the Work of priming as Well as finishing the printing is a distinct advantage. A

I am aware that the construction and arrangement may be varied in numerous respects Without departure from the nature and principle of the invention.

l do not restrict myself unessentially but what I claim and desire to secure by Letters Patent is Y l. A machine of the character' described comprising a Work support, a carriage mount-- ed adjacent to said support, a form cylinder supported by the carriage, gearing for moving the carriage and rotating the cylinder, a` motor supported by the carriage, mechanism driven by the motor for operating said gearing to move the carriage and rotate the cylinder, and means supported by the carriage for causing said motor to operate said mechanism alternately in opposite directions.

2. A machine of the character described comprising` a table for supporting the Work, a carriage supported adjacent to the table, a form cylinder supported by the carriage, a motor mounted on the carriage, gearing for moving the carriage and rotating the cylinder, mechanism driven by the motor for operating said gearing, and means supported by the carriage for changing the direction of operation of said mechanism by said motor While said motor operates continuously in one direction.

3. A machine of the character described comprising a table for supporting the Work, a carriage supported adjacent to the table, a form cylinder supported by the carriage, a motor mounted on the carriage, gearing for movingthe carriage and rotating the cylinder, mechanism driven by the motor for operating said gearing, means supported by the carriage for changing the direction of operation of said mechanism by said motor While said motor operates continuously in one direction, and devices for operating said means to reverse the operation of said mechanism as aforesaid.

t. A machine of the character described comprising a table for supporting the Work, a carriage supported adjacent to the table, a form cylinder supported by the carriage, gearing for moving the carriage and rotating the cylinder, a motor mounted on the carriage, mechanism driven by the motor for operating said gearing, devices supported by the carriage for changing the direction of operation of said mechanism by said motor While said motor operates continuously in one direction to move the carriage alternately in opposite directions and to rotate the cylinder alternately in opposite directions, and means operated by said gearing for applying paint to the forms on said cylinder.

5. A machine of the character described comprising a table for supporting the Work, a carriage supported adjacent to the table, a paint applying device in said carriage, a motor carried by said carriage, mechanism mounted on the carriage and operated by the motor for moving the carriage back and forth adj acentto the table according to the direction of operation of said mechanism by said motor, and means supported by the carriage for changing the direction of operation of said mechanism by said motor While said motor operates continuously in one direction.

6. A machine of the character described comprising a table for supporting the Work, a carriage supported adjacent to the table, a paint applying device in said carriage, a motor carried by said carriage, mechanism mounted on the carriage and operated by the motorfor moving the carriage back and forth adjacent to the table according to the direction of operation of said mechanism by said motor, means supported by the carriage for changing the direction of operation of Asaid mechanism by said motor while said motor operates continuously in one direction, and means for moving said paint applying device to and from operative position.

7. A machine of the character described comprising a table for supporting the Work, a carriage supported adjacent to the table, a paint applying device in said carriage, a motor carried by said carriage, mechanism mounted on the carriage and operated by the motor for moving the carriage back and forth adjacent to the table according to the direction of operation of said mechanism by said motor, means supported by the carriage for changing the direction of operation of said mechanism by said motor While said motor operates continuously in one direction, and means for holding the paint applying device in operative position duiing movement of the carriage in one direction and outof operative position during movement of the carriage in the opposite direction. f r

8. A machine of the character described comprising a table for supporting the Work, a carriage supported adjacent to the table, a form cylinder supported by the carriage, a motor supported by the carriage, mechanism driven by the motor for operating the carriage and rotating the cylinder alternately in each of two directions, devices supported by the carriage for changing the direction of operation of said mechanism by said motor While said motor operates continuously in o-ne direction, a paint applying device supported in said carriage for supplying paint to the forms on the cylinder, and mechanism for operating said paint applying device as yan incident to the operation of the carriage.

9. A machine of the. character described comprising a table for supporting the Work, a carriage supported adjacent to the table, a form cylinder supported by the carriage, a motor supported by the carriage, mechanism driven by the motor for operating the carriage and rotating the cylinder alternately in each of two direct-ions, devices supported by the carriage for changing the direction of operation ofv said mechanism by said motor While said motor operates continuously in one direction., a paint applying device supported in said carriage for supplying paint to the forms on the cylinder, and means controlling said paint applying device to apply paint to the forms on said cylinder during movement of the cylinder in one direction and to remain ineffective during movement of the cylinder in the other direction, leaving the cylinder to act as a priming device for Work during movement of said cylinder in said other direction.

10. A machine of the character described comprising a table for supporting the Work, impression mechanism for operating upon the work, a carriage supporting the impression mechanism, driving mechanism mounted on the carriage for operating the carriage in opposite directions and for operating the impression mechanism, a motor for driving said driving mechanism, and means supported by the carriage for reversing the direction of operation of said driving mechanism by said motor While said motor operates continuously in one direction.

ll. ln a machine of the character described, a. carriage, a form cylinder supported by the carriage, a shaft supported by the carriage and arranged to rotate continuously in one direction, an additional shaft supported by the carriage, mechanism for rotating the additional shaft alternately in opposite directions, and mechanism driven by the additional shaft for rotating the form cylinder.

l2. In a machine of the character described, a carriage, a form cylinder supported by the carriage, a shaft supported by the carriage and arranged to rotate continuously in one direction, an additional shaft supported by the carriage, mechanism for rotating the additional shaft alternately in opposite directions, mechanism driven by the additional shaft for rotating the form cylinder, and means for movingthe carriage as an incident to the rotation of said cylinder.

13. A machine of the character' described comprising a form cylinder, a movable carriage in which said cylinder is mounted, mechanism for operating and controlling the form cylinder to prime the Work with a. thin coat of paint by movement of the form cylinder in one direction and complete the work by applying a finishing coat of paint by movement of the form cylinder in the other direction, a prime mover supported by the carriage for operating said mechanism, devices supported bv the carriage for changing the direction of operating of said mechanism by said prime mover, and elements for operating said devices automatically and as an incident to the movement of the carriage to a predetermined point.

14. A machine of the character described comprising a carriage, a cylinder supported. by the carriage, gearing for moving the. carriage and rotating the cylinder, a motor supported by the carriage, mechanism driven by the motor for operating the gearing to move the carriage and rotate the cylinder, devices supported by the carriage for causing said motor to operate said mechanism alternately in opposite direct-ions, and means for automatically operating said devices to cause said. motor to operate said mechanism alternately in opposite directions asaforesaid.

LILE C. Rawson.V 

